46results about How to "Guaranteed creepage distance" patented technology

The invention provides a conduction type charging connector for an electric vehicle. The connector comprises a vehicle end connecting part and a charger end connecting part, wherein the vehicle end connecting part comprises an insulating socket structure, the charger end connecting part comprises an insulating plug structure, the plug structure and the socket structure are matched with each other; the plug comprises an earth electrode and a power supply electrode, a charge controlling electrode is also arranged in the plug; a jack which is formed in the socket is matched with the plug electrodes, the heights of the earth electrode, the power supply electrode and the charge controlling electrode decrease in turn. In the invention, an inserting mode is adopted between the vehicle end connecting part and the charger end connecting part, two conductors which are matched with each other and correspond in positions are respectively arranged on the vehicle end connecting part and the chargerend connecting part; by adopting the structure, the charging connector can be directly inserted without an intermediate transition structure, thus the charging connector is convenient to use; each electrode adopts the structure with a certain height difference, thus the connector can be avoided plugging an electric arc during the connecting and separating process, the safety of the operators and vehicles can be ensured and the service life of the connector can be prolonged.

The invention discloses an environment-friendly gas insulated switchgear. The top of an inflation chamber (7) is connected with a wire outlet sleeve (6) in a penetrating manner. The bottom of the inflation chamber (7) is connected in a penetrating manner with a wire inlet sleeve (10) communicated to a cable chamber (5). A three-position switch device (8) and a vacuum circuit breaker device (9) arearranged in the inflation chamber (7). A circuit breaker shaft (15) and an isolation grounding shaft (21) are both inserted into the inflation chamber (7), and the circuit breaker shaft (15) and theisolation grounding shaft (21) drive the vacuum circuit breaker device (9) and the three-position switch device (8) respectively. The environment-friendly gas insulated switchgear has a compact overall structure and reliable performance, and has a maintenance-free function. The problem that harmful insulating gas leaks to damage the environment and the problem that epoxy resin and other solid insulation bring a large amount of solid waste are solved fundamentally.

An outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway includes brackets, two connection branches mounted on the brackets that are parallel and independent to each other and an integrated automation control box, a bipolar solid-sealing disjunctor is mounted onto middle part of the brackets, an outgoing line connection terminal is located on a first solid-sealing strut type transformer, moving contact of a first bipolar disconnector is located on bracket of the first solid-sealing strut type transformer, between the first bipolar disconnector and the disjunctor is provided with current transformer, stationary contact of the first bipolar disconnector is located on the current transformer which is connected with a single polar solid-sealing disjunctor; an incoming line connection terminal is located on a second solid-sealing strut type transformer, moving contact of a second bipolar disconnector is located on the second solid-sealing strut type transformer, stationary contact of the second bipolar disconnector is located on a solie-sealing polar of the disjunctor. The invention can reduce floor space efficiently and capitalized cost, and has good reliability and good prosucts reliability, which is convenient to maintain.

The invention discloses a self-locking type power cable plugging connector. The self-locking type power cable plugging connector comprises an inserting piece base and a fixed sealing cover; a positioning groove is formed in a cavity in one end of the inserting piece base; a fixed sealing cover clamping groove is formed in the fixed sealing cover; a power cable conductor is sleeved with a power cable semi-conductive layer; the bottom of the power cable conductor is sleeved with a power cable insulating layer; the bottom of a power cable outer sheath layer is sleeved with a cable auxiliary semi-conductive layer and a cable auxiliary insulating layer from inside to outside in sequence; a spring contact finger mounting groove is formed in the upper end surface of a concave type metal socket; a conductive buffer groove and a self-locking limiting groove are formed in a convex type inserting piece from the top to bottom in sequence; and the spring contact finger mounting groove and the metal spring contact finger are in interference fit. The self-locking type power cable plugging connector has a small size, self-locking function plugging connection characteristic and high voltage resistance, and the main body, without using other parts and medium, can pass an alternating current voltage withstand test to be suitable for an underground type transformer, a fully-sealed oil switch and SF<6> electrical equipment.

The invention discloses a novel butt joint structure of a conductive slide ring, and belongs to the technical field of electromechanical devices. The novel butt joint structure solves the problems ofburning out of a pin fixing base, inaccurate positioning of a rotating butt joint part and mis-inserting of male and female pins during the field use of the sliding ring in high temperature environment. The novel butt joint structure includes a female pin socket assembly and a male pin plug assembly connected to the female pin socket assembly. The female pin socket assembly includes a female pin bearing mounting seat, a female pin mounting seat assembly, female pin sleeves, shoulder screws and female pin assemblies. The male pin plug assembly includes a male pin fixing seat, a male pin mounting seat assembly, male pin sleeves and male pin assemblies. Positioning columns for positioning with the male pin assemblies are arranged on the female pin bearing mounting seat. Positioning grooves for matching the positioning columns are arranged in the male pin fixing seat. The female bearing mounting seat is connected to the male pin fixing seat through the cooperation of the positioning columns and the positioning grooves. The male pin assemblies are inserted into the female pin assemblies through the cooperation of the positioning columns and the positioning grooves.

The invention discloses a wiring device of a mining explosion-proof permanent magnet synchronous variable-frequency traction motor. The wiring device comprises a base, a stator winding, a wiring boltand an insulating sleeve, wherein the stator winding is installed in the cylinder wall of the base in a winding manner, and a preset distance is formed between the stator and one opening of the base;a first through hole penetrating through the cylinder wall is formed in the preset distance, the insulating sleeve is fixed outside the cylinder wall of the base through the first through hole, and the bottom end of the insulating sleeve extends into the cylinder wall; and a wiring bolt penetrates into and is fixed in the insulating sleeve, and the upper end and the lower end of the wiring bolt are respectively exposed out of the top end and the bottom end of the insulating sleeve. According to the invention, the problem that the space of a motor junction box is compressed is solved; the mining explosion-proof permanent-magnet synchronous variable-frequency traction motor solves the problem that a mining explosion-proof permanent-magnet synchronous variable-frequency traction motor in an improved transport locomotive head for a coal mine cannot be designed due to the fact that a terminal sleeve cannot be arranged, a special stop gasket, a terminal electrical gap and a creepage distancecannot meet standard requirements, simplifies the device and reduces the cost at the same time.

The invention relates to the structural design and manufacturing fields of medium-high voltage switchgears, and discloses an integrally formed embedded electrode component with an inner umbrella skirt and an outer shell. The integrally formed embedded electrode component comprises the outer shell (1), of the electrode component, which is made of a thermoplastic insulating material; and the inner umbrella skirt (2) integrally formed with the outer shell (1) of the electrode component is arranged on the inner peripheral surface of the outer shell (1) of the electrode component. The embedded electrode component disclosed by the invention adopts an integrally formed manner of the inner umbrella skirt and the outer shell, so that the cost is reduced, the production efficiency is improved, the creep distance is guaranteed, the interior space of the electrode component is large, and parts and components in the shell are convenient to disassemble and repair. Moreover, the structure adopted by the design is unlikely to accumulate dirt such as dust, so that the risk that the insulation level is decreased caused by the dirt is reduced.

The invention provides a cascade module unit applied to a power electronic transformer. The cascade module unit comprises a power module, a power unit board, a thermal management component, a currentdetection component, a redundant loop component, a loop connection component and a module shell, adopts a cascade H-bridge CHB topology, and adopts a star connection method to perform multi-module series connection. The cascade module unit solves the problem of insufficient withstand voltage of a single power electronic device IGBT. The cascade module unit has the advantages that the modular degree of the internal components is high, and the assembly is convenient; the whole module is convenient to assemble, electrical connection can be rapidly achieved, and a hot plug function is achieved; the air volume of a fan is utilized to the maximum extent, and the overall module cooling efficiency is high; a redundancy function is achieved, and the reliability of the system is high; the volume weight is small, and the power density is high; and the overall demetallization degree of the module is higher, the creepage distance and the electrical gap are ensured, and the safety of the module unitis high.

The invention discloses a large-caliber split type conductive slip ring suitable for a high-humidity environment, which is composed of a center shaft, a combined support, ring pieces, insulating spacers, a pressing plate and an electric brush assembly. The insulating spacer is a stepped spacer which is made of POM (polyoxymethylene) and is high in inside and low in outside, and a wire passing notch is milled in the inner ring of the insulating spacer. The ring piece sleeves the outer circle of the protruding portion of the insulating spacer, and the wire passing notches of two adjacent insulating spacers are staggered by 180 degrees. The creep distance and the gap between the stator and the rotor are ensured through the design of the conductive slip ring structure to control and prevent moisture diffusion, and a high insulation resistance value between rings in a high-humidity environment is used, thereby ensuring integrity and stability of transmitted signals. The application of the large-caliber split type conductive slip ring in a high-humidity environment is realized, great convenience is provided for the field of electric rotation signal transmission, and the problems of integrity and stability of signals transmitted by the large-caliber split type conductive slip ring in a 360-degree rotation mode in the high-humidity environment are solved.